For those who like critters, this site is of developing museum in England with many industrial and WWI trench diesel/gas critters. They recently finished a new three track storage facility with two 2' gauge tracks and one dual gauge (2' + 2'6") track -all for their critters (very little non-powered stock so far that I can see!). This is their news page, with links to other parts of their site.
http://www.mrt.org.uk/Enjoy!
Phil